chore: bump version to 7.2.7

- Enhance smart-search with advanced MCP integration
- Add GEMINI_API_KEY configuration support in codexlens
- Update MCP server with new tool handlers
- Add tests for smart-search MCP usage
- Update documentation

ccw/frontend/src/locales/en/codexlens.json

@@ -298,6 +298,7 @@
   "envField": {
     "backend": "Backend",
     "model": "Model",
+    "autoEmbedMissing": "Auto Build Missing Vectors",
     "useGpu": "Use GPU",
     "highAvailability": "High Availability",
     "loadBalanceStrategy": "Load Balance Strategy",